40results about How to "Solve pollution discharge" patented technology

The invention discloses a method for preparing 5-hydroxymethylfurfural by solid acid catalysis. The method comprises the following steps of taking lignin residue hydrolyzed by biomass as carrier raw material of solid acid; synthesizing the raw material into solid acid through a two-step way of carbonization and sulfonation, so that the waste material is recycled and the problem of disposal of pollutants is solved. In the dehydration reaction of lignin-based solid acid catalyzed fructose and glucose, the yield of 5-hydroxymethylfurfural can be respectively 84% and 68%; after the dehydration reaction, the lignin-based solid acid is easy to separate and reusable, the acid density of the solid acid can be reduced after being reused five times, and the yield of the 5-hydroxymethylfurfural is still higher than 75%. The method provided by the invention can be used for realizing emission without pollution, and is helpful for realizing environment-friendly producing process of 5-hydroxymethylfurfural.

The invention discloses a hot-blast furnace pipe packing material and a preparation method therefor. The packing material is prepared from the ingredients in parts by weight: 100 parts of dry mattersand 10-25 parts of silica sol, wherein the 100 parts of dry matters comprise high bauxite, flint clay or mullite particles, silicon carbide particles, high bauxite or corundum powder, metal-nonmetal composite powder, activated alumina micropowder, calcined alumina micropowder, clay micropowder, carboxymethyl cellulose or hydroxymethyl cellulose and a curing agent. The packing material disclosed bythe invention is pollution-free to environments, is good in fluidity in construction time, is not prone to settlement, can be thoroughly packed into small slits during pressed-in repair, can be constructed at high temperatures and can also be cured at normal temperatures; the packing material can be tightly bonded to a material of a pressed-in area; the packing material has good strength propertyat all temperatures; the packing material has low linear shrinkage in service temperature intervals and has good thermal shock stability; and industrial wastes of other industries are utilized, so that the utilization ratio of resources is increased.

A lubricating oil additive and lubricating oil are disclosed. The additive includes 70-99 parts by mass of base oil and 1-30 parts by mass of oil-soluble magnesium silicate hydroxide. The additive is stable in performance, and the cost is low. The additive is free of sulfur, phosphorus and other elements, thus avoiding pollutant discharge problems of sulfur, phosphorus and other elements. The additive, under boundary lubrication conditions, can effectively prevent direct contact between a friction pair, reduce abrasion, prevent clinkering, seizing and stuck phenomena, and scratches on surfaces of the friction pair, and greatly improve extreme pressure resistance of the lubricating oil.

The invention discloses a blast furnace bottom joint filler. The joint filler comprises, by weight, 100 parts of dry materials and 10-25 parts of a binder, wherein 100 parts of the dry materials include silicon carbide particles, fine silicon carbide powder, carbon, a metal-nonmetal composite powder, a silicon dioxide micro-powder, a clay micro-powder, an aluminum oxide micro-powder, a dispersantand a curing agent. The invention further discloses a preparation method of the blast furnace bottom joint filler. The blast furnace bottom joint filler has a high heat conductivity coefficient, can effectively transfer heat, has a high strength index and a high density, has no pollution to the environment, is easy to construct, can fully fill joints, can closely combine with a material for filling the area, can be constructed at a high temperature, also can be constructed and solidified at normal temperature, has a small linear change rate and a good thermal shock stability in a use temperature interval, and improves the resource utilization rate by using wastes in other industries.

The invention provides an oil field steam-injection boiler heating system adopting a solid thermal-storage electric boiler and two-stage heat exchange. The oil field steam-injection boiler heating system comprises a thermal source heating system, a steam injection system and an exhaust pipeline. The thermal source heating system comprises the solid thermal-storage electric boiler and a two-stage heat exchange system. Subcritical and supercritical steam can be generated through the solid thermal-storage electric boiler and the two-stage heat exchange system and injected underground through the steam injection technical system to heat crude oil, and the steam injection and heating processes are conducted on a thickened oil well. Power grid night off-peak electricity with low electricity price can be used and converted into heat energy, and high-temperature heat storage is conducted through the solid thermal-storage electric boiler. Steam injection and heating are conducted on the thickened oil well through high-parameter steam produced by the oil field steam-injection boiler heating system, the problem of combustion emission pollution of an oil field steam injection boiler is solved, peak-valley difference peak regulation can be conducted on a power grid by combining the electric boiler and the energy storage technology, and the best solution scheme facilitating energy conservation, emission reduction and environment protection of the petroleum industry and electricity peak regulation of power plants and the power grid is achieved.

The invention discloses a novel zirconium composite ceramic material which is characterized by being prepared from the following substances in parts by weight: 10-20 parts of titanium corundum, 35-50 parts of Macang soil, 4-8 parts of aluminum nitride, 15-31 parts of chinastone, 11-15 parts of maize powder, 3.2-9 parts of ferric oxide, 5-17 parts of acrylic resin, 5-13 parts of silicon nitride, 35-48 parts of ox bones, 11-19 parts of magnesium oxide, 3-9 parts of chromic oxide, 1.6-5.4 parts of boron nitride, 15-40 parts of zirconium dioxide and 5-11 parts of aluminum oxide. The material disclosed by the invention is small in coefficient of thermal expansion, low in cost, resource-saving and high in refractoriness, thermal shock stability resistance and oxidation resistance, and solves the problems of pollution of waste residues and emission of pollution of industrial waste residues. Nitrogen and oxygen in air are fully utilized as fuels, so that the energy sources are saved, thereby achieving the effects on saving energy and reducing emission to a great extent.

The invention discloses a microbial treatment technology for extracting nicotine, which comprises the following steps: (1) pretreatment of tobacco leaves; (2) cultivation of a microbial strain; (3) fermentation of the tobacco leaves; and (4) extraction of the nicotine. The microbial treatment technology adopts the compound microbial treatment for extracting the nicotine, degrades and damages cellulose, hemicellulose and other plant tissues in tobacco after the microwave treatment through white-rot fungus, pachysolen tannophilus and other microbes, effectively releases the nicotine attached onthe tissue structure and improves the dissolution rate and the extraction rate of the nicotine; and the microbial treatment technology can also effectively degrade organic acid, proteins and the likein the tobacco, reduce the emulsification phenomenon during the extraction process of the nicotine and simultaneously reduce the using amount of an organic solvent. The method has the advantages of high extraction rate of the nicotine, a small using amount of the organic solvent, high recovery rate and ability of effectively realizing the reduction of the discarded tobacco and the resource recycling of the tobacco.

The invention belongs to the technical field of biomass utilization, and particularly discloses a nanometer Na/Fe composite type solid acid catalyst and a preparation method and application thereof. The preparation method of the catalyst comprises the following steps that ferrous chloride and ferric chloride are mixed to be uniform under the action of hydrochloric acid according to the certain ratio, then, sodium hydroxide is dropwise added, and the nanometer Na/Fe composite type solid acid catalyst is prepared through a forward sedimentation method. Biomass and the prepared nanometer catalystare mixed according to the certain ratio, pyrolysis is performed under the inert atmosphere, and the high-selectivity furfural product can be obtained. The catalyst is simple in preparation process,low in cost, high in selectivity, capable of solving the problems that in the prior art, furfural selectivity is low and few by-products are produced, and capable of achieving biomass directional conversion and high-value utilization.

The invention discloses a white spirit production process and relates to the technical field of food processing. The process mainly comprises the following steps of koji making, material selection and crushing, grain moistening, material steaming, cooling and koji addition, fermentation in a jar, wine steaming, secondary residue fermentation and wine steaming, and aging, blending and filling. Straws discharged from a koji room are crushed into fine powder by using a crusher, and the fine powder and crushed koji-making raw materials are pressed into koji blocks according to an addition ratio of 5%. Compared with the fermentation without straw powder, the fermentation of the koji blocks is fast in temperature rise and sufficient in fragrance, and the growth conditions of harmful bacteria in the koji blocks are inhibited and controlled, so that the quality of koji is improved. The koji blocks are firstly subjected to coarse crushing and then subjected to fine crushing, the crushing size of the koji blocks for large-residue fermentation is controlled to be 1-1.5 mm in particle size, the crushing size of the koji blocks for secondary residue fermentation is controlled to be 0.8-1.2 mm in particle size, the crushing fineness of yeast for making hard liquor can influence the fermentation temperature rise speed, crushing is relatively coarse, and temperature rise is relatively slow during fermentation, so that low-temperature slow fermentation is facilitated; and particles are relatively fine, and the fermentation temperature rise is relatively fast.

The invention relates to the field of chemistry, in particular to a method of recovering a byproduct generated by a glass CVD (chemical vapor deposition) filming technology and an application of the method. The method comprises the following steps of: S1: drying the byproduct generated by the glass CVD technology in a drier to form dry powder, S2: adding the dry powder obtained in S1 into a vibration sizer for vibration separation to form a separation mixture, and S3: adding the separation mixture obtained in S2 into an air suspension separator for refined separation treatment to form nanoscale tin dioxide and micron-sized sodium bicarbonate. The method is simple in step and low in cost; nanoscale tin dioxide recovered by the method can serve as a raw material of automobile tail gas purifying agent; materials can be recycled; the cost of the raw material of the automobile tail gas purifying agent is lowered; the method can be used for the field of automobile environmental protection and solves the pollution emission problem of a glass enterprise at the same time.

The invention discloses a high-temperature propylene chlorination process epichlorohydrin production waste water integrated treatment process, which belongs to the technical field of environmental protection. Each high-temperature propylene chlorination process production enterprise is equipped with an electrolytic edible saline solution section, a majority of enterprises adopt the edible saline solution by exploiting underground brine, the brine contains a certain amount of Na2SO4 which influences the electrolysis of the edible saline solution, so that the Na2SO4 needs to be separated beforeelectrolysis of the edible saline solution. A great amount of CaCl2 is generated in a cyclization phase of the high-temperature propylene chlorination process for producing the epichlorohydrin and enters waste water, and the treated CaCl2-containing waste water cannot be directly discharged. According to the above situation, Na2SO4 is adopted to react with CaCl2 to generate CaSO4, i.e., gypsum, and after the separation, the gypsum can be used as an auxiliary material of a cement factory; and after the reaction, the waste water containing a great amount of NaCl and COD enters an MCOP (modifiedcontact oxidation process) system to perform the biochemical reaction, the water produced in the reaction is oxidized at a high level to further remove COD, so that the COD of the discharged water isless than or equal to 60 mg/L, the waste water containing a great amount of NaCl can be used as a dilute saline solution for exploiting saline brine. By adopting the process, not only is the problem that the utilization rate of the Na2SO4 is low solved, but also the pollution emission problem of the CaCl2 can be solved, a purpose of treating the waste by using waste can be achieved, and the industrial policy of the national resource comprehensive utilization can be satisfied.

The invention discloses a system and a process for storing and releasing electric energy based on a methanation reaction. The system and the process each comprise a carbon-oxygen-containing purification system, a gas generation system, a methanation system, a vapor heating system of the methanation system, a product separation system, a product storage system and a gas power generation system. Compared with the prior art, the system and the process provided by the invention can realize the purposes of performing peak regulation of the existing power grid and improving electric energy utilization efficiency through storing excess electric energy in the form of a substitute natural gas, and generating electric energy by a gas turbine power generation system through utilizing the substitute natural gas when the power utilization peak comes.

The invention relates to a super-audio electromagnetic bar. A bottom plate is welded at one end of a stainless steel heating tube, and a flange is welded outside an opening in the other end of the stainless steel heating tube; a coil winds around a ceramic tube by multiple circles at intervals; the ceramic tube is arranged inside the stainless steel heating tube; a joint at one end of the coil enters the ceramic tube via an upper coil outgoing hole in the ceramic tube and extends out of a hole I in a flange plate connected with the flange; and a joint at the other end of the coil enters the ceramic tube via a lower coil outgoing hole in the ceramic tube and extends out of a hole II in the flange plate connected with the flange. Problems of low electricity-heat transformation rates, disability of stepless regulation of output power, low maximum output power, disability of parching, short service life, possibility of production of scale and the like, which are not solved so far, of domestic like products are better solved. The electricity-heat transformation rate is higher than that of an external coil, electromagnetic wave shielding is realized, radiation and interference are avoided, water and electricity are separated, potential safety hazards are avoided, and the electromagnetic bar is simple in structure and can be widely applied to various electric heating devices.

The invention discloses a high-corrosion-resistance composite ceramic material which is characterized by comprising the following components in parts by weight: 25-45 parts of zirconite, 31-55 parts of titanium corundum, 10-23 parts of zirconium silicate, 21-47 parts of Cangma soil, 5.5-13.7 parts of boron nitride, 1-10 parts of silicon dioxide, 5-19 parts of titanium mineral, 5-11 parts of borax, 1-8 parts of zirconium dioxide, 3-9 parts of manganese oxide, 1-4 parts of chrome oxide, 15-49 parts of magnesite, 0.5-3.7 parts of magnesium oxide, 11-28 parts of apatite, 5-27 parts of dolomite and 1-3 parts of alumina. The high-corrosion-resistance composite ceramic material has the advantages of small thermal expansion coefficient, low cost, high fire resistance, high thermal shock stability and high oxidation resistance, solves the waste residue pollution, saves the resources, solves the problem of industrial residue pollution discharge, thoroughly utilizes nitrogen and oxygen in air as fuels, saves the energy sources, and has the effects of energy saving and emission reduction.

The invention discloses a preparation method of high-calorific-value nonpolar bio-oil/gasoline homogeneous fuel oil. The method aims at increasing a calorific value of bio-oil. The method comprises the steps that primary bio-oil is subjected to catalytic cracking and deoxidized by an NiCoMo/HZSM-5 catalyst; the deoxidized bio-oil is dehydrated and decolorized by CaCl2 and activated carbon; polar components of the bio-oil are separated by a silica gel column chromatography; nonpolar bio-oil is obtained; finally the nonpolar bio-oil can be mixed with gasoline in any proportion by mechanical stirring, without adding any emulsifier. The method solves the problem of lower calorific value caused by oxygen and water containing in the primary bio-oil, overcomes the defects of great primary bio-oil polarity and gasoline insolubility, and is high in primary bio-oil utilization ratio; the prepared fuel oil is environment-friendly and high in calorific value; the calorific value can reach 46-55MJ/kg. A good solution is provided for high-efficiency utilization of the bio-oil in a gasoline engine.